Home / 991,418.22-1,368,165.80-538,709.22

Finding the Fourth Proportional to 991,418.22, 1,368,165.80 and 538,709.22

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Solution

The fourth proportional to 991,418.22, 1,368,165.80 and 538,709.22 is: 743,423.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,418.22 : 1,368,165.80 = 538,709.22 : x
  2. Step 2: Convert to fraction form
    991,418.22/1,368,165.80 = 538,709.22/x
  3. Step 3: Cross multiply
    991,418.22x = 1,368,165.80 × 538,709.22
  4. Step 4: Simplify right side
    991,418.22x = 737,043,530,948.68
  5. Step 5: Solve for x
    x = 737,043,530,948.68/991,418.22
  6. Step 6: Final answer
    x = 743,423.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.